DTC Logic
DTC DETECTION LOGIC
NOTE: DTC P1148 is displayed with DTC for A/F sensor 1.
When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.
| DTC No. | Trouble diagnosis (Trouble diagnosis content) | DTC detecting condition | Possible cause |
| P1148 | CLOSED LOOP-B1 (Closed loop control function) | The closed loop control function does not operate even when vehicle is being driven in the specified condition. |
|
Diagnosis Procedure
DTC P1148 is displayed with DTC for A/F sensor 1.
When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.
Refer to EC, "DTC Index".
Intake valve timing control
Intake valve timing control : System Diagram
Intake valve timing control : system description
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*1
Piston position
Intake valve timing
con ...
P0607 ECM
DTC Logic
DTC DETECTION LOGIC
DTC No.
Trouble diagnosis
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0607
ECM
(CAN communication bus)
When detecting error during the initial diagnosis
of CAN controller of ECM.
ECM
DTC CO ...